Why Ethan Peck Didn't Appear As Star Trek: Discovery's Mirror Universe Spock Revealed By Writer

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Warning: This Article Contains SPOILERS for Star Trek: Discovery Season 5, Episode 5 - "Mirrors"

Summary Star Trek: Discovery's "Mirrors" reintroduces ISS Enterprise, but Ethan Peck as Mirror Spock didn't happen due to availability issues.

Co-writer Carlos Cisco explains the missed opportunity for Peck's cameo in the Mirror Universe as Spock.

Discovery's latest episode explores Mirror Universe history when the ISS Enterprise is found in interdimensional space.

Star Trek: Discovery season 5, episode 5, "Mirrors", reintroduced the ISS Enterprise, but co-writer Carlos Cisco reveals why a cameo by Ethan Peck of Star Trek: Strange New Worlds as the Mirror Universe's Spock didn't happen. In "Mirrors", which was co-written by Cisco and Johanna Lee and directed by Jen McGowan, Captain Michael Burnham (Sonequa Martin-Green) and Cleveland Booker (David Ajala) find the Mirror Universe's 23rd-century Starship Enterprise in interdimensional space and pilot it into Star Trek's Prime Universe 23rd century. However, the ISS Enterprise was abandoned, although a plaque told some of the Mirror Universe's history.

In an interview with TrekMovie, Star Trek: Discovery season 5, episode 5 co-writer Carlos Cisco says that Star Trek: Strange New Worlds' Ethan Peck appearing in some fashion as the Mirror Universe's Spock was "considered" but didn't happen. Cisco speculates that "availability issues" may have been the reason Discovery missed out on Peck playing his goateed Mirror Universe Vulcan doppelganger. Read his quote below:

We had considered Ethan [Peck] as Mirror Spock early on but there might have been availability issues, I don’t know.

Ethan Peck did lend his voice as Spock for several episodes of Star Trek: very Short Treks.

Related Star Trek’s 10 Most Evil Mirror Universe Characters Star Trek's Mirror Universe is home to the most evil versions of our favorite Starfleet heroes, but which ones are the best of the worst?

Source: TrekMovie.com

New episodes of Star Trek: Discovery season 5 stream Thursdays on Paramount+